[Arthroses of the hip joint and their treatment. Developments and progress in the area of conservative and surgical therapy].

Osteoarthritis of the hip joint is due either to primary diseases of the articular cartilage or to secondary conditions leading to degenerative changes, for example, pre-arthritic deformities or arthropathies, so-called. Besides conservative treatment with non-steroidal anti-inflammatory drugs and physical therapy, treatment of pre-arthritic deformities by curative osteotomy continues to be of major importance. The introduction of the Rapid Prototyping method considerably improved the preoperative planning and orientation of such procedures. In the case of advanced coxarthrosis, total hip arthroplasty is used, in which, depending on bone biology, cementless procedures are now being employed in addition to the well-proven implantation with cement. Success depends not only on material and shape, but also to a high degree on the surface structure of these cementless implants. In particular three-dimensional interconnecting open-mesh surfaces enable differentiated anchoring of the prosthesis.